Numerous flights were delayed or cancelled due to a power outage at Hartsfield-Jackson Atlanta International Airport on Sunday.

Power was fully restored at the airport by 11:45 p.m., according to Georgia Power.

Passengers at Hartsfield-Jackson Airport were left in the dark when the lights suddenly went out in the early afternoon, the Associated Press reported. The blackout halted all outgoing flights, and arriving planes were held on the ground at their point of departure. International flights were being diverted, officials said.

The power outage caused three flight delays and one cancellation at Palm Beach International Airport. Click here to check whether your flight has been affected.